A triangle PQR has its vertices at P (7, 6), Q (-1, -2), and R (-7, 4).

c

step-by-step explanation:

because of the levels

sorry but i cant draw that

8.75

how-to:

first, we need to find what we have to work with.

since i know that we have 7 (years) and 0.8 (inches), we can use these to solve and find the equation!

secondly, what you want to do, is see that we need to know how much growth out of the 0.8 inches he got in only 1 year, instead of 7 years.

let's try to divide.

7 ÷ 0.8 = 8.75